The portable micro-XRF spectrometer (µ-XRF) consists of a spectrometric head equipped with a low power microfocus X-ray tube (30W) with a Rh anode coupled to a focusing polycapillary lens. The spot of the beam coming out from the primary X-ray source is about 50x50 microns at the focus distance of ca. 10 mm. The detection system consists of a Peltier cooled silicon drift detector (X-flash energy-dispersive detector) with 10 mm2 active area and a <150 eV energy resolution for Mn Kα at 10 kcps and dead time <10 % at 40 kcps. The measuring head also includes an integrated CCD camera (500x582 PAL active pixels, ca. 20x magnification) with LED illumination and laser spot on the sample to guide the positioning and focusing on a desired spot through a compact control unit (CPU), which includes a high voltage generator, is part of the system. The CPU is used for controlling the operational parameters of the scanner and to visualize spectra and provide real-time elemental information. The XYZ axes system installed on the µ-XRF ARTAX instrument can cover a travel range of ± 22 mm with lateral resolution of 10 µm. A tripod is used for free positioning of the system, including rolling skates, a free rotatable arm and variable height adjustment (500–1500 mm). The system can be used for point analysis or for the mapping of small areas. On a single spot, ARTAX is suitable for fast, high-resolution multielement analysis of Na (11) to U (92). For mapping, it operates with a continuous scanning covering a maximum area of 22x22 mm2 with typical dwell time of 2-5 seconds. The µ-XRF ARTAX 800 can be configured to perform scans in both vertical and horizontal geometries.

Image/Figure
Dataset
Dataset/Data package (images, spectra, other)
XRF spectra .spX file

Noncontact (no physical contact)
Noninvasive (no physical alteration)

Bruker

Artax 800

micro
2 x 2 cm